Hobart Welding Products 175 User manual

Category
Welding System
Type
User manual

This manual is also suitable for

Processes
OM-944 196 639G
October 2003
Handler 135 / 175
And H-10 Gun
Arc Welding Power Source And
Wire Feeder
Description
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
Visit our website at
www.HobartWelders.com
R
Hobart Welders manufactures a full line
of welders and welding related equipment.
For information on other quality Hobart products, contact your local Hobart
distributor to receive the latest full line catalog or individual catalog sheets.
To locate your nearest distributor or service agency call 1-877-Hobart1.
Thank you and congratulations on choosing Hobart. Now you can get the
job done and get it done right. We know you don’t have time to do it any
other way.
This Owners Manual is designed to help you get the most out of your
Hobart products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Hobart you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will help
you figure out what the problem is. The parts
list will then help you to decide the exact part
you may need to fix the problem. Warranty and
service information for your particular model
are also provided.
Hobart is registered to the
ISO 9001:2000 Quality
System Standard.
Working as hard as you
do every power source
from Hobart is backed by
the best warranty in the
business.
From Hobart to You
Hob_Thank 7/03
TABLE OF CONTENTS
SECTION 1 SAFETY PRECAUTIONS - READ BEFORE USING 1 ...................................
1-1. Symbol Usage 1 ........................................................................
1-2. Arc Welding Hazards 1 ..................................................................
1-3. Additional Symbols For Installation, Operation, And Maintenance 3 .............................
1-4. California Proposition 65 Warnings 3 .......................................................
1-5. Principal Safety Standards 4 .............................................................
1-6. EMF Information 4 ......................................................................
SECTION 2 CONSIGNES DE SÉCURITÉ À LIRE AVANT UTILISATION 5 ..........................
2-1. Signification des symboles 5 .............................................................
2-2. Dangers relatifs au soudage à l’arc 5 ......................................................
2-3. Autres symboles relatifs à l’installation, au fonctionnement et à l’entretien de l’appareil. 7 ...........
2-4. Principales normes de sécurité 8 ..........................................................
2-5. Information sur les champs électromagnétiques 8 ............................................
SECTION 3 SPECIFICATIONS 9 ................................................................
3-1. Specifications 9 ........................................................................
3-2. Duty Cycle And Overheating 10 ............................................................
3-3. Volt-Ampere Curves 11 ...................................................................
SECTION 4 INSTALLATION 12 ..................................................................
4-1. Installing Welding Gun 12 .................................................................
4-2. Installing Work Clamp 12 ..................................................................
4-3. Process/Polarity Table 13 .................................................................
4-4. Changing Polarity 13 .....................................................................
4-5. Installing Gas Supply 14 ..................................................................
4-6. Selecting A Location And Connecting Input Power For 115 VAC Model 15 .........................
4-7. Selecting A Location And Connecting Input Power For 230 VAC Model 16 ........................
4-8. Electrical Service Guide For 230 VAC Model 17 ..............................................
4-9. Installing Wire Spool And Adjusting Hub Tension 17 ...........................................
4-10. Threading Welding Wire 18 ................................................................
SECTION 5 OPERATION 19 ....................................................................
5-1. Controls 19 .............................................................................
5-2. Weld Parameter Chart For 115 VAC Model 20 ................................................
5-3. Weld Parameter Chart For 230 VAC Model 22 ................................................
SECTION 6 MAINTENANCE &TROUBLESHOOTING 24 ............................................
6-1. Routine Maintenance 24 ..................................................................
6-2. Overload Protection 24 ...................................................................
6-3. Drive Motor Protection 24 .................................................................
6-4. Changing Drive Roll Or Wire Inlet Guide 25 ..................................................
6-5. Replacing Gun Contact Tip 25 .............................................................
6-6. Cleaning Or Replacing Gun Liner 26 ........................................................
6-7. Replacing Switch And/Or Head Tube 27 .....................................................
6-8. Troubleshooting Table 28 .................................................................
SECTION 7 ELECTRICAL DIAGRAM 29 ..........................................................
TABLE OF CONTENTS
SECTION 8 MIG WELDING (GMAW) GUIDELINES 31 ..............................................
8-1. Typical MIG Process Connections 31 .......................................................
8-2. Typical MIG Process Control Settings 32 ....................................................
8-3. Holding And Positioning Welding Gun 33 ....................................................
8-4. Conditions That Affect Weld Bead Shape 34 .................................................
8-5. Gun Movement During Welding 35 .........................................................
8-6. Poor Weld Bead Characteristics 35 .........................................................
8-7. Good Weld Bead Characteristics 35 ........................................................
8-8. Troubleshooting Excessive Spatter 36 .....................................................
8-9. Troubleshooting Porosity 36 .............................................................
8-10. Troubleshooting Excessive Penetration 36 .................................................
8-11. Troubleshooting Lack Of Penetration 37 ...................................................
8-12. Troubleshooting Incomplete Fusion 37 .....................................................
8-13. Troubleshooting Burn-Through 37 .........................................................
8-14. Troubleshooting Waviness Of Bead 38 ....................................................
8-15. Troubleshooting Distortion 38 ............................................................
8-16. Common MIG Shielding Gases 39 ..........................................................
8-17. Troubleshooting Guide For Semiautomatic Welding Equipment 39 ...............................
SECTION 9 PARTS LIST 42 .....................................................................
OPTIONS AND ACCESSORIES
WARRANTY
OM-944 Page 1
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SECTION 1 SAFETY PRECAUTIONS - READ BEFORE USING
som _8/03
1-1. Symbol Usage
Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.
Y Marks a special safety message.
. Means “Note”; not safety related.
This group of symbols means Warning! Watch Out! possible
ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions
to avoid the hazards.
1-2. Arc Welding Hazards
Y The symbols shown below are used throughout this manual to
call attention to and identify possible hazards. When you see
the symbol, watch out, and follow the related instructions to
avoid the hazard. The safety information given below is only
a summary of the more complete safety information found in
the Safety Standards listed in Section 1-5. Read and follow all
Safety Standards.
Y Only qualified persons should install, operate, maintain, and
repair this unit.
Y During operation, keep everybody, especially children, away.
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocks
or severe burns. The electrode and work circuit is
electrically live whenever the output is on. The input
power circuit and machine internal circuits are also
live when power is on. In semiautomatic or automatic wire welding, the
wire, wire reel, drive roll housing, and all metal parts touching the
welding wire are electrically live. Incorrectly installed or improperly
grounded equipment is a hazard.
D Do not touch live electrical parts.
D Wear dry, hole-free insulating gloves and body protection.
D Insulate yourself from work and ground using dry insulating mats
or covers big enough to prevent any physical contact with the work
or ground.
D Do not use AC output in damp areas, if movement is confined, or if
there is a danger of falling.
D Use AC output ONLY if required for the welding process.
D If AC output is required, use remote output control if present on
unit.
D Disconnect input power or stop engine before installing or
servicing this equipment. Lockout/tagout input power according to
OSHA 29 CFR 1910.147 (see Safety Standards).
D Properly install and ground this equipment according to its
Owner’s Manual and national, state, and local codes.
D Always verify the supply ground check and be sure that input
power cord ground wire is properly connected to ground terminal in
disconnect box or that cord plug is connected to a properly
grounded receptacle outlet.
D When making input connections, attach proper grounding conduc-
tor first double-check connections.
D Frequently inspect input power cord for damage or bare wiring
replace cord immediately if damaged bare wiring can kill.
D Turn off all equipment when not in use.
D Do not use worn, damaged, undersized, or poorly spliced cables.
D Do not drape cables over your body.
D If earth grounding of the workpiece is required, ground it directly
with a separate cable.
D Do not touch electrode if you are in contact with the work, ground,
or another electrode from a different machine.
D Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
D Wear a safety harness if working above floor level.
D Keep all panels and covers securely in place.
D Clamp work cable with good metal-to-metal contact to workpiece
or worktable as near the weld as practical.
D Insulate work clamp when not connected to workpiece to prevent
contact with any metal object.
D Do not connect more than one electrode or work cable to any
single weld output terminal.
SIGNIFICANT DC VOLTAGE exists after removal of
input power on inverters.
D Turn Off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to your
health.
FUMES AND GASES can be hazardous.
D Keep your head out of the fumes. Do not breathe the fumes.
D If inside, ventilate the area and/or use exhaust at the arc to remove
welding fumes and gases.
D If ventilation is poor, use an approved air-supplied respirator.
D Read the Material Safety Data Sheets (MSDSs) and the
manufacturers instructions for metals, consumables, coatings,
cleaners, and degreasers.
D Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Always have a trained watch-
person nearby. Welding fumes and gases can displace air and
lower the oxygen level causing injury or death. Be sure the breath-
ing air is safe.
D Do not weld in locations near degreasing, cleaning, or spraying op-
erations. The heat and rays of the arc can react with vapors to form
highly toxic and irritating gases.
D Do not weld on coated metals, such as galvanized, lead, or
cadmium plated steel, unless the coating is removed from the weld
area, the area is well ventilated, and if necessary, while wearing an
air-supplied respirator. The coatings and any metals containing
these elements can give off toxic fumes if welded.
OM-944 Page 2
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Arc rays from the welding process produce intense
visible and invisible (ultraviolet and infrared) rays
that can burn eyes and skin. Sparks fly off from the
weld.
ARC RAYS can burn eyes and skin.
D Wear a welding helmet fitted with a proper shade of filter to protect
your face and eyes when welding or watching (see ANSI Z49.1
and Z87.1 listed in Safety Standards).
D Wear approved safety glasses with side shields under your
helmet.
D Use protective screens or barriers to protect others from flash and
glare; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant mate-
rial (leather and wool) and foot protection.
Welding on closed containers, such as tanks,
drums, or pipes, can cause them to blow up. Sparks
can fly off from the welding arc. The flying sparks, hot
workpiece, and hot equipment can cause fires and
burns. Accidental contact of electrode to metal objects can cause
sparks, explosion, overheating, or fire. Check and be sure the area is
safe before doing any welding.
WELDING can cause fire or explosion.
D Protect yourself and others from flying sparks and hot metal.
D Do not weld where flying sparks can strike flammable material.
D Remove all flammables within 35 ft (10.7 m) of the welding arc. If
this is not possible, tightly cover them with approved covers.
D Be alert that welding sparks and hot materials from welding can
easily go through small cracks and openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that welding on a ceiling, floor, bulkhead, or partition can
cause fire on the hidden side.
D Do not weld on closed containers such as tanks, drums, or pipes,
unless they are properly prepared according to AWS F4.1 (see
Safety Standards).
D Connect work cable to the work as close to the welding area as
practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock and fire hazards.
D Do not use welder to thaw frozen pipes.
D Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
D Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding.
FLYING METAL can injure eyes.
D Welding, chipping, wire brushing, and grinding
cause sparks and flying metal. As welds cool,
they can throw off slag.
D Wear approved safety glasses with side
shields even under your welding helmet.
BUILDUP OF GAS can injure or kill.
D Shut off shielding gas supply when not in use.
D Always ventilate confined spaces or use
approved air-supplied respirator.
HOT PARTS can cause severe burns.
D Do not touch hot parts bare handed.
D Allow cooling period before working on gun or
torch.
MAGNETIC FIELDS can affect pacemakers.
D Pacemaker wearers keep away.
D Wearers should consult their doctor before
going near arc welding, gouging, or spot
welding operations.
NOISE can damage hearing.
Noise from some processes or equipment can
damage hearing.
D Wear approved ear protection if noise level is
high.
Shielding gas cylinders contain gas under high
pressure. If damaged, a cylinder can explode. Since
gas cylinders are normally part of the welding
process, be sure to treat them carefully.
CYLINDERS can explode if damaged.
D Protect compressed gas cylinders from excessive heat, mechani-
cal shocks, slag, open flames, sparks, and arcs.
D Install cylinders in an upright position by securing to a stationary
support or cylinder rack to prevent falling or tipping.
D Keep cylinders away from any welding or other electrical circuits.
D Never drape a welding torch over a gas cylinder.
D Never allow a welding electrode to touch any cylinder.
D Never weld on a pressurized cylinder explosion will result.
D Use only correct shielding gas cylinders, regulators, hoses, and fit-
tings designed for the specific application; maintain them and
associated parts in good condition.
D Turn face away from valve outlet when opening cylinder valve.
D Keep protective cap in place over valve except when cylinder is in
use or connected for use.
D Read and follow instructions on compressed gas cylinders,
associated equipment, and CGA publication P-1 listed in Safety
Standards.
OM-944 Page 3
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1-3. Additional Symbols For Installation, Operation, And Maintenance
FIRE OR EXPLOSION hazard.
D Do not install or place unit on, over, or near
combustible surfaces.
D Do not install unit near flammables.
D Do not overload building wiring be sure power supply system is
properly sized, rated, and protected to handle this unit.
FALLING UNIT can cause injury.
D Use lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.
D Use equipment of adequate capacity to lift and
support unit.
D If using lift forks to move unit, be sure forks are
long enough to extend beyond opposite side of
unit.
OVERUSE can cause OVERHEATING
D Allow cooling period; follow rated duty cycle.
D Reduce current or reduce duty cycle before
starting to weld again.
D Do not block or filter airflow to unit.
STATIC (ESD) can damage PC boards.
D Put on grounded wrist strap BEFORE handling
boards or parts.
D Use proper static-proof bags and boxes to
store, move, or ship PC boards.
MOVING PARTS can cause injury.
D Keep away from moving parts.
D Keep away from pinch points such as drive
rolls.
WELDING WIRE can cause injury.
D Do not press gun trigger until instructed to do
so.
D Do not point gun toward any part of the body,
other people, or any metal when threading
welding wire.
MOVING PARTS can cause injury.
D Keep away from moving parts such as fans.
D Keep all doors, panels, covers, and guards
closed and securely in place.
H.F. RADIATION can cause interference.
D High-frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communications equipment.
D Have only qualified persons familiar with
electronic equipment perform this installation.
D The user is responsible for having a qualified electrician prompt-
ly correct any interference problem resulting from the installa-
tion.
D If notified by the FCC about interference, stop using the
equipment at once.
D Have the installation regularly checked and maintained.
D Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.
ARC WELDING can cause interference.
D Electromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.
D Be sure all equipment in the welding area is
electromagnetically compatible.
D To reduce possible interference, keep weld cables as short as
possible, close together, and down low, such as on the floor.
D Locate welding operation 100 meters from any sensitive elec-
tronic equipment.
D Be sure this welding machine is installed and grounded
according to this manual.
D If interference still occurs, the user must take extra measures
such as moving the welding machine, using shielded cables,
using line filters, or shielding the work area.
1-4. California Proposition 65 Warnings
Y Welding or cutting equipment produces fumes or gases which
contain chemicals known to the State of California to cause
birth defects and, in some cases, cancer. (California Health &
Safety Code Section 25249.5 et seq.)
Y Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.
For Gasoline Engines:
Y Engine exhaust contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive
harm.
For Diesel Engines:
Y Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
OM-944 Page 4
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1-5. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,
from American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126
(phone: 305-443-9353, website: www.aws.org).
Recommended Safe Practices for the Preparation for Welding and Cut-
ting of Containers and Piping, American Welding Society Standard
AWS F4.1, from American Welding Society, 550 N.W. LeJeune Rd, Mi-
ami, FL 33126 (phone: 305-443-9353, website: www.aws.org).
National Electrical Code, NFPA Standard 70, from National Fire Protec-
tion Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA
022699101 (phone: 6177703000, website: www.nfpa.org and www.
sparky.org).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 1735 Jefferson Davis Highway,
Suite 1004, Arlington, VA 222024102 (phone: 7034120900, web-
site: www.cganet.com).
Code for Safety in Welding and Cutting, CSA Standard W117.2, from
Canadian Standards Association, Standards Sales, 178 Rexdale
Boulevard, Rexdale, Ontario, Canada M9W 1R3 (phone:
8004636727 or in Toronto 4167474044, website: www.csain-
ternational.org).
Practice For Occupational And Educational Eye And Face Protection,
ANSI Standard Z87.1, from American National Standards Institute, 11
West 42nd Street, New York, NY 100368002 (phone: 2126424900,
website: www.ansi.org).
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, NFPA Standard 51B, from National Fire Protection Association,
P.O. Box 9101, 1 Battery March Park, Quincy, MA 022699101 (phone:
6177703000, website: www.nfpa.org and www. sparky.org).
OSHA, Occupational Safety and Health Standards for General Indus-
try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,
and Part 1926, Subpart J, from U.S. Government Printing Office, Super-
intendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (there
are 10 Regional Offices−−phone for Region 5, Chicago, is
3123532220, website: www.osha.gov).
1-6. EMF Information
Considerations About Welding And The Effects Of Low Frequency
Electric And Magnetic Fields
Welding current, as it flows through welding cables, will cause electro-
magnetic fields. There has been and still is some concern about such
fields. However, after examining more than 500 studies spanning 17
years of research, a special blue ribbon committee of the National
Research Council concluded that: “The body of evidence, in the
committee’s judgment, has not demonstrated that exposure to power-
frequency electric and magnetic fields is a human-health hazard.”
However, studies are still going forth and evidence continues to be
examined. Until the final conclusions of the research are reached, you
may wish to minimize your exposure to electromagnetic fields when
welding or cutting.
To reduce magnetic fields in the workplace, use the following
procedures:
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
4. Keep welding power source and cables as far away from opera-
tor as practical.
5. Connect work clamp to workpiece as close to the weld as possi-
ble.
About Pacemakers:
Pacemaker wearers consult your doctor first. If cleared by your doctor,
then following the above procedures is recommended.
OM-944 Page 8
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2-4. Principales normes de sécurité
Safety in Welding, Cutting, and Allied Processes, norme ANSI Z49.1,
de l’American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126
(téléphone : (305) 4439353, site Web : www.aws.org).
Recommended Safe Practices for the Preparation for Welding and Cut-
ting of Containers and Piping, norme American Welding Society AWS
F4.1, de l’American Welding Society, 550 N.W. LeJeune Rd, Miami, FL
33126 (téléphone : (305) 4439353, site Web : www.aws.org).
National Electrical Code, norme NFPA 70, de la National Fire Protection
Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA
022699101 (téléphone : (617) 7703000, sites Web : www.nfpa.org et
www.sparky.org).
Safe Handling of Compressed Gases in Cylinders, brochure CGA P1,
de la Compressed Gas Association, 1735 Jefferson Davis Highway,
Suite 1004, Arlington, VA 222024102 (téléphone : (703) 4120900,
site Web : www.cganet.com).
Code for Safety in Welding and Cutting, norme CSA W117.2, de la Ca-
nadian Standards Association, Standards Sales, 178 boulevard
Rexdale, Rexdale (Ontario) Canada M9W 1R3 (téléphone : (800)
4636727 ou à Toronto : (416) 7474044, site Web : www.csainterna-
tional.org).
Practice For Occupational And Educational Eye And Face Protection,
norme ANSI Z87.1, de l’American National Standards Institute, 11 West
42nd Street, New York, NY 100368002 (téléphone : (212) 6424900,
site Web : www.ansi.org).
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, norme NFPA 51B, de la National Fire Protection Association,
P.O. Box 9101, 1 Battery March Park, Quincy, MA 022699101 (télé-
phone : (617) 7703000, site Web : www.nfpa.org et www.sparky.org).
OSHA, Occupational Safety and Health Standards for General Indus-
try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,
and Part 1926, Subpart J, de l’U.S. Government Printing Office, Super-
intendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (il y a
10 bureaux régionaux Téléphone pour la Région 5, Chicago : (312)
3532220, site Web : www.osha.gov).
2-5. Information sur les champs électromagnétiques
Données sur le soudage électrique et les effets des champs magnéti-
ques basse fréquence sur l’organisme
En parcourant les câbles de soudage, le courant crée des champs élec-
tromagnétiques. Les effets potentiels de tels champs restent
préoccupants. Cependant, après avoir examiné plus de 500 études qui
ont été faites pendant une période de recherche de 17 ans, un comité
de spécialistes du National Research Council a conclu : « L’accumula-
tion de preuves n’a pas démontré que l’exposition aux champs
magnétiques et aux champs électriques à haute fréquence constitue un
risque pour la santé humaine ». Toutefois, les études et l’examen des
preuves se poursuivent. En attendant les conclusions finales de la re-
cherche, il serait souhaitable de réduire l’exposition aux champs
électromagnétiques pendant le soudage ou le coupage.
Afin de réduire les champs électromagnétiques en milieu de travail, res-
pecter les consignes suivantes :
1. Garder les câbles ensemble en les torsadant ou en les fixant avec du
ruban adhésif.
2. Mettre tous les câbles du côté opposé à l’opérateur.
3. Ne pas s’enrouler les câbles autour du corps.
4. Garder le poste de soudage et les câbles le plus loin possible de soi.
5. Placer la pince de masse le plus près possible de la zone de soudage.
Consignes relatives aux stimulateurs cardiaques :
Les personnes qui portent un stimulateur cardiaque doivent avant tout
consulter leur médecin. Si ce dernier les déclare aptes, il leur est recom-
mandé de respecter les consignes ci-dessus.
OM-944 Page 9
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SECTION 3 SPECIFICATIONS
3-1. Specifications
A. 115 VAC Model
Rated Welding
Output
Amperage
Range
Maximum Open-
Circuit Voltage
DC
Amperes Input at
Rated Load Output
115 V, 60 Hz, Single-
Phase
KVA KW
Weight
W/ Gun
Overall
Dimensions
90 A @ 19 Volts DC,
20% Duty Cycle
63 A @ 21 Volts DC,
20% Duty Cycle*
30 135
28
20
15*
2.90
2.20*
2.50
1.77*
55 lb
(25 kg)
Length: 18-7/8 in
(479 mm)
Width: 10-5/8 in
(270 mm)
Height: 12-3/8 in
(314 mm)
Wire Type
And Dia
Solid/
Stainless
Flux Cored/
Aluminum
Wire Feed Speed Range
.024 .030 in
(0.6 0.8 mm)
.030 .035 in
(0.8 0.9 mm)/
.030
(0.8 mm)
370 840 IPM (9.2 21.8 m/min) At No Load
190 800 IPM (4.9 20.8 m/min) Feeding Wire
* CSA Rating
B. 230 VAC Model
Rated Welding
Output
Amperage
Range
Maximum Open-
Circuit Voltage
DC
Amperes Input at
Rated Load Output
230 V, 50/60 Hz,
Single-Phase
KVA KW
Weight
W/ Gun
Overall
Dimensions
130 A @ 20 Volts
DC, 30% Duty Cycle
At 60 Hz Input 20%
Duty Cycle At 50 Hz
Input
30 175
30 19.5 4.60 3.75
65 lb
(29.5 kg)
Length: 18-7/8 in
(479 mm)
Width: 10-5/8 in
(270 mm)
Height: 12-3/8 in
(314 mm)
Wire Type
And Dia
Solid/
Stainless
Flux Cored/
Aluminum
Wire Feed Speed Range
.024 .035 in
(0.6 0.9 mm)
.030 .045 in
(0.8 1.2 mm)/
.030 .035 in
(0.8 0.9 mm)
350 900 IPM (9.0 23.0 m/min) At No Load
150 850 IPM (3.9 22.1 m/min) Feeding Wire
OM-944 Page 10
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3-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
Y Exceeding duty cycle can
damage unit or gun and void
warranty.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 196 617 / 196 618
A. 115 VAC Model
B. 230 VAC Model
3 Minutes Welding 7 Minutes Resting
Duty Cycle %
Output Amperes
10
20
40
60
80
100
200
10
20
30
40 50
60 70 80 100
130
20% duty cycle at 90 amps
30% duty cycle at 130 amps, 60 Hz
20% duty cycle at 130 amps, 50 Hz
2 Minutes Welding 8 Minutes Resting
Duty Cycle %
Output Amperes
1
410
20
40 60 100
2
6808
10
20
40
60
80
100
200
135
OM-944 Page 11
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3-3. Volt-Ampere Curves
The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.
ssb1.1 10/91 196 608 / 196 609
A. 115 VAC Model
B. 230 VAC Model
0.0
5.0
10.0
15.0
20.0
25.0
30.0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
LOAD AMPS
OUTPUT VOLTS
Range 4
Range 3
Range 2
Range 1
0.0
5.0
10.0
15.0
20.0
25.0
30.0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
LOAD AMPS
OUTPUT VOLTS
Range 4
Range 3
Range 2
Range 1
OM-944 Page 12
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SECTION 4 INSTALLATION
4-1. Installing Welding Gun
Ref. 802 440-A
1 Drive Assembly
2 Gun Securing Thumbscrew
3 Gun End
Loosen thumbscrew. Insert gun
end through opening until it bottoms
against drive assembly. Tighten
thumbscrew.
4 Gun Trigger Leads
Insert leads, one at a time, through
gun opening on front panel.
Connect female friction terminals to
matching male terminals in unit.
Polarity is not important.
Close door.
4
1
2
3
4-2. Installing Work Clamp
1 Nut
2 Work Cable From Unit
3 Work Clamp
4 Screw
5 Work Clamp Tabs
Bend tabs around work cable.
802 456
1
2
3
4
5
Tools Needed:
3/8, 7/16 in
OM-944 Page 13
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4-3. Process/Polarity Table
Process Polarity
Cable Connections
Cable To Gun Cable To Work
GMAW Solid wire with shield-
ing gas
DCEP Reverse polarity Connect to positive (+) out-
put terminal
Connect to negative () output
terminal
FCAW Self-shielding wire
no shielding gas
DCEN Straight Polarity Connect to negative ()
output terminal
Connect to positive (+) output
terminal
4-4. Changing Polarity
1 Lead Connections For Direct
Current Electrode Negative
(DCEN)
2 Lead Connections For Direct
Current Electrode Positive
(DCEP)
Always read and follow wire
manufacturers recommended po-
larity, and see Section 4-3.
Close door.
Ref. 209 228 / Ref. 209 229
DCEN
DCEP
Electrode Negative
For Flux Core Wire
Electrode Positive
For Solid Wire
CHANGING
POLARITY
1
2
OM-944 Page 14
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4-5. Installing Gas Supply
Obtain gas cylinder and chain to
running gear, wall, or other
stationary support so cylinder
cannot fall and break off valve.
1 Cap
2 Cylinder Valve
Remove cap, stand to side of valve,
and open valve slightly. Gas flow
blows dust and dirt from valve.
Close valve.
3 Cylinder
4 Regulator/Flowmeter
Install so face is vertical.
5 Regulator/Flowmeter Gas
Hose Connection
6 Welding Power Source Gas
Hose Connection
Connect customer supplied gas
hose between regulator/flowmeter
gas hose connection, and fitting on
rear of welding power source.
7 Flow Adjust
Typical flow rate is 20 cfh (cubic
feet per hour). Check wire
manufacturers recommended flow
rate.
Tools Needed:
Ref. 802 028-A / 802 441
5/8, 1-1/8 in
6
1
2
3
Argon Gas Or
Mixed Gas
4
5
7
. DO NOT use Argon/Mixed gas regulator/flowmeter
with CO
2
shielding gas. See Parts List for optional
CO
2
gas regulator/flowmeter.
OM-944 Page 15
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4-6. Selecting A Location And Connecting Input Power For 115 VAC Model
1 Rating Label
2 Grounded Receptacle
A 115 volt, 20 ampere individual
branch circuit protected by time-de-
lay fuses or circuit breaker is re-
quired.
3 Plug From Unit
Select extension cord of 14 AWG
for up to 50 ft (15 m) or 12 AWG for
50 up to 200 ft (61 m).
Y Special installation may be
required where gasoline or
volatile liquids are present
see NEC Article 511 or CEC
Section 20.
2
1
3
18 in
(460 mm)
18 in
(460 mm)
802 442-A
OM-944 Page 16
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4-7. Selecting A Location And Connecting Input Power For 230 VAC Model
1 Rating Label
Supply correct input power.
2 Plug (NEMA 6-50P)
3 Receptacle (NEMA 6-50R)
Connect plug to receptacle.
4 Line Disconnect Device
See Section 4-8.
Y Special installation may be
required where gasoline or
volatile liquids are present
see NEC Article 511 or CEC
Section 20.
ssb2.2* 1/94 802 443-A / Ref. 802 085
18 in (457 mm) of
space for airflow
L1
L2
2
230 VAC, 1
Y Always connect
grounding
conductor first.
= GND/PE
3
Y Do not move or operate unit
where it could tip.
L1
L2
4
1
OM-944 Page 17
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4-8. Electrical Service Guide For 230 VAC Model
Input Voltage
230
Input Amperes At Rated Output
20
Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes
20
Min Input Conductor Size In AWG/Kcmil
14
Max Recommended Input Conductor Length In Feet (Meters)
66 (20)
Min Grounding Conductor Size In AWG/Kcmil
12
Reference: 1996 National Electrical Code (NEC) S-0092-J
4-9. Installing Wire Spool And Adjusting Hub Tension
When a slight force is needed
to turn spool, tension is set.
1/2 in
Tools Needed:
803 012 / 803 013 -B / Ref. 802 971-C
Installing 8 in (203 mm) Wire Spool
Installing 4 in (102 mm) Wire Spool
When a slight force is needed
to turn spool, tension is set.
Retaining ring used
with 8 in (203 mm)
spool only.
Adapter used with
8 in (203 mm)
spool only.
OM-944 Page 18
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4-10. Threading Welding Wire
1 Wire Spool
2 Welding Wire
3 Inlet Wire Guide
4 Pressure Adjustment Knob
5 Drive Roll
6 Gun Conduit Cable
Lay gun cable out straight.
Tools Needed:
6
1
3
4
5
Pull and hold wire; cut off end.
4 in
(102 mm)
Remove gun nozzle and contact tip.
Open pressure assembly.
Push wire thru guides into gun;
continue to hold wire.
. Hold wire tightly to keep it
from unraveling.
Ref. 802 444-C
WOOD
Feed wire to check drive roll pressure.
Tighten knob enough to prevent slipping.
Cut off wire. Close door.
Press gun trigger until wire comes
out of gun.
2
Turn power on.
INPUT
POWER
6 in
(150 mm)
Tighten
1
2
3
4
. Use pressure indicator
scale to set a desired
drive roll pressure.
Pressure
Indicator
Scale
Tighten
1
2
3
4
Be sure that wire is positioned
in proper feed roll groove.
Close and tighten pressure
assembly, and let go of wire.
Be sure that tip matches wire diameter.
Reinstall contact tip and nozzle.
OM-944 Page 19
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SECTION 5 OPERATION
5-1. Controls
1 Voltage Switch
The higher the selected number,
the thicker the material that can be
welded (see weld setting label in
welding power source or Sections
5-2 and 5-3, as applicable). Do not
switch under load.
. Switch must “click” into detent
position 1, 2, 3, 4, or purge for
proper contact.
2 Voltage Switch - Purge “0”
Position
In purge position, fan runs but there
is no weld output.
3 Wire Speed Control
Use control to select a wire feed
speed. As Voltage switch setting in-
creases, wire speed range also in-
creases (see weld setting label in
welding power source or Sections
5-2 or 5-3, as applicable).
4 Power Switch
Ref. 196 082
2
1
3
4
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Hobart Welding Products 175 User manual

Category
Welding System
Type
User manual
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